Pipe-suspending apparatus



Jan. 16, 1923.,

E. P. HALLEY. Pl'PE SUSPENDING APPARATUS.

2 SHEETS-SHEET l.

FILED NQV. 22,1921- v I SMDQ'VL'IZOZ EP Hey mmumw Jan. 16, 1923.

E. P. HALLEY.

PI PE SUSPENDING APPARATUS.

2 SHEETS-SHEET 2- avwawboz H0112 Patented Jan. 16, 1923.

ir s stares e arisiar orries.

ELTON 'PIHALLEY, OFS'ANDERSON, TEXAS.

PIPE-SUSPENDING AIPPARATUS.

Application-filed November 22, 1921.

This invention relates to a casingo'r well pipe suspending apparatus. Animportant object is to PI'OVKlB tL suspending apparatus or holder ofthetype mentioned to prevent dropping of apipe intoa wellof oil or wateror elsewhere in order to eliminate the labor, timeand expense requiredin fishing-it out.

Another object isto provide such' an ar tic'le-havinggripping dogs tonormally hold thepipe or caslng andprovided with 'means tosimultaneously release all of the 1 dogs from the pipe, and tosocon'stru'ct the dogs as to resist turning of thepipe incidental to theapplication or removal of couplings.

A furtherobject is to provide a novel means of the particular"construction and equivalent thereof set forth hereinafter.

IVith the above and additional objects such as will appear in thedescription following taken in connectionwith the accompanying drawings,the invention has been embodied in one practical form as illustrated insaid drawings. 2

In said drawings 2 Figure 1 is a plan view of the suspending apparatushaving a pipe retained therein;

Figure 2 is a side elevation of said apparatus alone;

Figure 3 is a central vertical section through the apparatus showing apipe gripped thereby, and

Figure 1 is an enlarged perspectlve view of one of the dogs andassociated parts to illustrate the pivotal mounting thereof.

Like reference characters designate like or similar parts throughout theviews.

In reducing the invention to practice, a suitable base is providedpreferably made in one piece which may consist of the rest plate 5, andan upstanding annular wall 6. The base has a central opening as at 8 andthe plate 5 at said opening is of less diing relation thereto.

SeriaLNo. 517,0861

ameter than 'the remainder thereof to provide a ledge at 9 which ispreferably curved from its upper surfaceto the lower surface to providea substantially chamfered edge for engagement by a secured pipe, tube orcasing as at 10. i V

Openings or slots 11 are provided-radially of'the wall= 6 and operabletherein are clutch dogs 12 which are pivoted on -shafts orrods securedin the wall=6 as-at 1-3. Any'suitable number-ofthedogs may be providedaccording to lndivldual ClBSIIQS OI' requirements.

Anannularband 14: is provided which is disposed abovethe wall 6 and insurround Pivoted to the under surface of the band 1% as at 15area-plurahtyel' arms 16. The arms "16 enter-the slots llthrough elongatedslots 17. The

free ends of said arms 16 enter the slots 18" 111 the lower 'endsof thedogs and fastening pins or pivots 19 pass through the dogs and throughsaid elonga-ted slots 17.

Above the shafts or rods 13-studs or'bolts 20 project one 'from each doginto-the adjacent recess 11 and on saidstuds expansive' coil springs21are disposed, one end of which abuts the dogs and theother'en d of whichabuts the reanend'wall at the slot. The springs 21 normally force thedogs inwardly into gripping relation with the *pipe 10.

Said dogs 12 have cambered surfaces extending into the recesses whichare toothed or serrated as at 22 to increase the effectiveness of theirgrip on the pipe 10, In order to resist turning of the pipe 10 whileengaged by the dogs, as during the application or removal of couplings,it is to be noted that the serrations are beveled on different dogs fromdifferent sides. In this way some of the dogs resist turning in onedirection and the other dogs will resist turning in the oppositedirection.

The band 14 is adapted for depression to release the dogs 12. To thisend a depressing ring member is provided at 23 above the band 14;. Thering 23 may be made in a single piece and intermediate its ends be bentinto a lug 24c, pivoted at 25, to brackets or standards 26 secured toand rising from the wall 6. The free ends or terminals of the band orring 23 are secured together and projected to form a handle at 27. Atdiametrically opposite points, pressure shoes whereby the pipe isgripped and will be.

maintained in fastened relation to the ap paratus, thus avoiding anydanger of detachment of the pipe and its falling into the well. When itis desired to release the pipe, it is simply necessary to' depress thehandle 27 which will retract the dogs and thus release the pipe.

In the eventthat a coupling is applied or removed from the pipe, anytendency of the pipe to turn is resisted and overcome by the serrationsat 22.

The beveled or chami'ered ledge 9 prevents the pipe joint fromcatchingor hanging in, a the apparatus and at the same time acts as aguide in perfectly positioning the pipe relatively to the dogs foreffective engagement thereby.

As merely one practical embodiment has been illustrated and described,it is to be understood that changes within the spir't and scope asdefined by appended claims may be made.

Having thus I claim is 2-- 1. A gripping apparatus of the classdescribed having a plurality of gripping dogs,

described the invention, what means to pivotally mount said dogs,springs urging projection ofsaid dogs, means to retract said dogscounter to the action of said spring, said springs and means havingconnection with the dogs on opposite sides of their pivots, anddepressible means to which said means is connected whereby the dogs willbe simultaneously operated.

2. A gripping device of the class described having a dog, means topivotally mount said dog, a projection extending from the dog, a springsurrounding said projection urging the dog into projected position, anarm connected to said dog on the opposite side of said pivot to saidspring, a'pivot pin passing through said dog and arm, and means toactuate said arm. r

3. A gripping apparatus of the class described having a base consistingof a plate, pivotally mounted dogs above said plate, means to urgeprojection otsaid dogs, arms operable to retract said dogs, adepressible member, said arms being pivoted to said depressible. member,a lever movable against said member, and means rising from said plate topivotally mount said lever.

4. A gripping apparatus or the class described having a base providedwith an opening to receive an article to be gripped, said base having aplate, said base having slots, dogs movable in said slots, rodspivotally mounting said dogs, springs engaging said dogs and walls ofthe slots to normally project the dogs, arms extending into said slots,pins pivotally connecting the arms to said dogs, a band, said arms beingpivoted to said band, a lever, means rising from said plate pivotallymounting said lever, a pressure shoe engageable with said band, and

means pivoting said shoe on said lever. In testimony whereof I atfix mysignature in presence of two witnesses.

ELTON P. HALLEY.

lVitnesses: v

LUELLA LEMoNs, ETHEL HARRELL.

